1 files changed, 49 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/prologueFailure-02.js b/js/src/jit-test/tests/debug/prologueFailure-02.js
new file mode 100644
index 000000000..d8c6e38ca
--- /dev/null
+++ b/js/src/jit-test/tests/debug/prologueFailure-02.js
@@ -0,0 +1,49 @@
+g = newGlobal();
+g.parent = this;
+
+function installHook() {
+    let calledTimes = 0;
+    function hook(frame) {
+        calledTimes++;
+        switch (calledTimes) {
+          case 1:
+            // Proxy get trap
+            assertEq(frame.type, "call");
+            assertEq(frame.script.displayName.includes("get"), true);
+            break;
+          case 2:
+            // wrapper function. There is no entry for notRun
+            assertEq(frame.type, "call");
+            assertEq(frame.script.displayName.includes("wrapper"), true);
+            break;
+          case 3:
+            assertEq(frame.type, "global");
+            // Force the top-level to return cleanly, so that we can tell
+            // assertion failures from the intended throwing.
+            return { return: undefined };
+
+          default:
+            // that's the whole chain.
+            assertEq(false, true);
+        }
+    }
+
+    Debugger(parent).onExceptionUnwind = hook;
+}
+
+
+g.eval("(" + installHook + ")()");
+
+var handler = {
+    get(t, p) {
+        throw new TypeError;
+    }
+};
+
+function notRun() {}
+
+function wrapper() {
+    var f = new Proxy(notRun, handler);
+    new f();
+}
+wrapper();